I found many popular web application such as facebook, twitter and gmail designed their menu
bar on the left side of the window. I want to ask if this is caused by some design principles and psychological reasons? My thought is it should make more sense to put menu bar on right side since most people use their right hand to hold the mouse. Hope someone familiar with UI design can help with this question. Thanks!
I found many popular web application such as facebook, twitter and gmail designed their
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Menu’s on the left ensure that you do not have to horizontally scroll in order to find your page navigation link or button.
Note that top of the page is also pretty common and in many situations just as useful, and minimalistic is now popular (show few options as possible/only options that are needed to make it quicker to get to your destination).